Added number generators

src/main/java/com/mattrixwv/generators/TriangularNumberGenerator.java

@@ -0,0 +1,57 @@
+//JavaClasses/src/main/java/com/mattrixwv/generators/TriangularNumberGenerator.java
+//Mattrixwv
+// Created: 08-20-22
+//Modified: 08-20-22
+//This class generates triangular numbers
+/*
+Copyright (C) 2022  Matthew Ellison
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+package com.mattrixwv.generators;
+
+
+import java.util.Iterator;
+import java.util.NoSuchElementException;
+
+
+public class TriangularNumberGenerator implements Iterator<Long>{
+	private Long num;
+
+	public TriangularNumberGenerator(){
+		num = 1L;
+	}
+
+	@Override
+	public boolean hasNext(){
+		return (num * num) > 0;
+	}
+
+	@Override
+	public Long next(){
+		Long newNum = ((num * num) + num) / 2;
+		++num;
+		if(num > 0){
+			return newNum;
+		}
+		else{
+			throw new NoSuchElementException("Number overflow");
+		}
+	}
+
+	public static boolean isTriangular(Long x){
+		Long n = Math.round((Math.sqrt(1 + (8 * x)) - 1) / 2);
+		return (((n * n) + n) / 2) == x;
+	}
+}